/// <summary>
/// Calls a render function for each cell within the grid,
/// passing as an argument any overlapping items
/// </summary>
public void Render(Action <Point2D, IEnumerable <ISpatial2DThing <T> > > renderer)
{
Read(() =>
{
foreach (var row in Rows)
{
foreach (var p in row.Where(p => ViewPort.Overlaps(p)))
{
renderer.Invoke(p, GetObjectsOverlapping(p));
}
}
return(1);
});
}